negu_(pixiv_6519140)
Artist.
See also
* Pixiv account: http://www.pixiv.net/member.php?id=6519140
* Seiga account: http://seiga.nicovideo.jp/user/illust/31789542
* Twitter account: https://twitter.com/ne__gu
* Twitter account (deleted): http://twitter.com/ugomemoSpabe